Hay-rake



PATBNTBD JAN. 19, 1904.

H. A. ADAMS.

HAY RAKE. APPLIoATIoN FILED AUG.18, 190s.

N0 f MODEL.

Mll-

lIMIIIIIIIiIIIHIIIIIIm No. mari 1.

UNITED STATES Patented .anuary i9, 1904.-

PATENT OFFICE.

HAYHRAKE.l

SPECIFICATION forming part of Letters Patent No. 749,711, dated January19, 1904.

Application filed August 18, 1908. Serial No. 169,873. (No model.)

vented from rotation.

The object of the invention is to provide, in a machine of this type inwhich the rake-head is provided with a pivot-shaft parallel but notcoincident with itself, a suitable brace intermediate of the ends of therake-head to prevent it from bowing out under the influence ofcentrifugal or other pressure.

The invention consists in the structure herein described and claimed,and illustrated in the accompanying drawings, in which- Figure 1 is adetail vertical longitudinal section of the rake-frame, and Fig. 2 is adetail transverse section thereof. Fig. 3 is a sectional detail of oneof the parts of the machine.

I have not deemed it necessary to illustrate the rake in full, but showonly those parts to which the invention particularly applies.

At 10 is shown one of the beams for carrying the rake-frame, and at 11the shaft thereof, which is provided with a pinion 12, by means of whichit may be rotated. Cross-arms 13 are fixed upon the shaft 11, and attheir ends are journaled pivot-rods 14 15, attached to the rake-heads 1617 by means of clips, as 18.

The rake-teeth 2O are set in the heads 16 17 and secured to thepivot-shafts 14 15, preferably by simply twisting them around the same.

The rake-heads are prevented from rotation by any suitable means, asshown by a sprocketchain 21, engaging a sprocket-wheel 22, fixed to thejournal-box 23 of the shaft 11, this chain turning over sprocket-wheels24 25, fixed upon the ends of the pivot-shafts 14 15, respectively.

The mechanism thus far described is old and is shown in Letters PatentNo. 7 22,931, granted to me on the 17th day of March, 1903.

The novel feature of the machine resides in means for bracing therake-heads intermediate of their ends. To this end there is applied toeach rake-head aplate 26, radially apertured to receive the shafts 14 15and the heads 16 17. From the disk face of each of these plates thereprojects a flange 27, which is concentric with the shaft 14 or 15. Theradial apertures of the plates 26 are flanked by Hanges 19, which arebolted to the heads 16 17, and the heads 16 17 fitting thereon, so as tobe eccentric as to the heads and concentric as to the shafts. Each ofthe iianges 27 is encircled by a strap, and the two straps are united.In order to secure cheapness of construction and simplicity ofassembling, I prefer to give the straps 28 29 substantially a U shape,their ends being sufciently prolonged so as to overlap and being unitedby means of bolts 30 and 31, located, respectively, upon opposite sidesof and adjacent to the shaft 11. As the rake-frame revolves the straps28 29 slide upon the peripheral faces of the iianges 27, so as toprovide entire freedom of movement and effectually bracing therake-heads against outward bowing, thereby preventing them frominterfering with other parts of the frame of the machine, Whilepermitting them to be of lighter construction than when not thus braced.

I claim as my invention- 1. In a hay-rake, in combination, a rotatableshaft, cross-arms fixed to the shaft, a pair of rake-heads, apivot-shaft attached to each head and journaled in the cross-arms, meansfor turning the pivot-shafts relatively as to the first-named shaft, aplate mounted upon each rake-head and having a peripheral face,concentric with the pivot shaft attached thereto, and a strapencircling the two plates.

2. In a ha 7-rake, in combination, a rotatable shaft, cross-arms fixedto the shaft, a pair of rake-heads, a pivot-shaft attached' to each headand journaled in the cross-arms, means for turning the pivot-shaftsrelatively as to the first-named shaft, a radially-recessed platemounted upon each rake-head and being concentric With thepivot-shaftattached thereto, and a strap encircling the two plates.

3. VIn a hay-rake, in combination, a rotatable shaft, cross-arms fixedto the shaft, a pair IOO of rake-heads, a pivot-shaft attached to eachone of the plates and having their ends secured head and journaled inthe cross-arms, means together. A for turning the pvot-shafts relativelyas to the irst-named shaft, a plate mounted upon 5 each rake-head andbeing concentric With the Witnesses:

pivot-shaft attached thereto, and a strap com- J. B. TUCKER, prsng twoU-shaped members each fitted to A. E. VVOODWARD.

HENRY A. ADAMS.

